Koni was a TS tropical cyclone that formed in the Philippine Sea in 2003. The storm reached maximum sustained winds of 111 km/h (60 kt) with a minimum central pressure of 975 hPa. Tracking across the Philippine Seain the Western Pacific basin (, it potentially affected the Philippines, Taiwan and Japan. The storm traveled from approximately 10.0°103.4° to 20.2°136.9°, crossing a range of 10 latitude and 34 longitude.